Measles exposure at a massive religious event in Kentucky has caused a CDC alert. According to Ars Technica, almost 20,000 people may have been exposed to the measles due to an unvaccinated patient attending a nonstop worship event in the state. CNN reports that the CDC has recommended all individuals within the area of Kentucky’s religious gathering to check for possible symptoms of measles. The Washington Post has stated that the measles superspreader event at the religious gathering was likely due to a measles patient who was not vaccinated. Boing Boing confirms the incident as a round-the-clock revival event. The Guardian US noted that the estimated number of people exposed may be even higher. Health authorities advised people to regularly check their health status and seek medical attention if they experience any symptoms associated with measles.